Looking for some dual quad advice from you experts. I have a 64 Galaxie 500 390, 4 speed car, backed with a 4.11 posi. I recently rebulit the block using the stock heads, roller tips rockers, headers, etc. The intake I'm currently running is an Edelbrock Performer RPM with a Holley 750 on top of her. I'm pleased with the performance, but was looking for more of a "wow" effect when I pop the hood. I was curious if anyone could give me some advice on dual quad intakes on FE's, and if this would be a worthwhile bolt on? Thanks for the help.
There are alot of guys who are doing the dual-quads on FE's in the COBRA crowd. You will find some real FE fanatics over there, try FFR (Factor Five Racing) and others. Those guys are all about finding every possible HP per cubic inch. I have a friend that swears by the FE's but he is also running the holy grail 427 side oiler, it was an original thunderbolt motor with factory tunnel ports head, intake and the REALLY big roller cam (the NASCAR package I believe it was called). Intake runner I could put my fist into, biggest intake runner I have ever saw.
dual quads require a motor that will handle them, lots of fuel and if you use a tunnel ram, get ready for cold start problems because of the intake runner length. they look good and perform good as long as the cam and the rest of the motor can handle that kind of fuel. a good ignition is required to burn the fuel. Good luck
Jr -- an origional 427 that came in a Thunderbolt was a Highriser. It was a centeroiler block. The sideoiler didnt come out until 65. Tunnel port heads and intakes didnt come till 67 and were a Nascar deal not a dragrace thing. OLDGAL There are four 2x4 intakes to choose from, Lowriser - Medium Riser - Highriser and Tunnelwedge. For what You have I would go with the Medium riser first choice then a lowriser 2nd. Run a pair of 450 to 550 cfm Holley carbs and You will be fine. Edelbrocks are just WRONG on a Ford intake. Grab Your wallet cause they arent cheap. And dont leave out the Factory TriPower they have the wow factor also and perform real well. --- FEDER
Hey OldGal- if you're looking to get rid of your current intake and carb, i'd probably be interested! pm me if ya want. My 67 GTA Fairlane could put that to good use.
I will have it off the motor within the next month. Stay in touch, and we can work something out with the carb and intake.I also have a Edelbrock Performer that I used for a month if your interested. My e-mail is rickykaz@yahoo.com Rick
Thanks for the help. You have to be patient with me...this is my first Ford. I have been a Bowtie guy until i bought the '64. I love the Ford, but the parts are a little harder to find and a little more expensive.
I've got a new Offenhauser 2x4 low rise in stock if you are interested. Dan Marvin, Owner Exeter Auto Supply
As an option, try the Holley 390 cfm 4 barrels on a lowriser manifold. On any engine, too much venturi area is the "kiss of death". The 390's with vacuum secondaries could be a good compromise.
The Offenhauser 2x4 low profile for the FE engines is the 360 degree equa-flow design. It is a single plain manifold with a divider running down the middle of the manifold to help equalize fuel/air flow at all RPM. As with any manifold selection, camshaft and carburetor choice will determine usage. The 2x4 manifold, using a 3/4 to full race camshaft designed for 7,000 max RPM and 2 550 CFM carburetors will have maxium HP start at 2,000 RPM and go until 7,400 RPM. Max torque will start at 2,900 RPM and go until 7,000 RPM. Using 2 650 CFM carburetors, HP will start at 3,500 RPM until 8,400 RPM while torque will start at 3,000 until 6,500 RPM. For street use, you have the option of disconnecting the seconaries and using only the primary venturies of the carburetors. Dan Marvin, Owner Exeter Auto Supply
Stick with the wow factor. If you haven't built your FE for RPM, the performance of a dual quad (medium riser, not low rser) is wasted. The low riser will not give you any more than your Performer RPM, and may be as bad as the Performer was. You'll never see anywhere near the RPM Dmarv stated without building up your valvetrain, restricting oil to the top, etc. With a healthy cam you'll be snapping stock rocker shafts with surprising regularity if you try to rev it. FE's are cool, but expensive. I have 2 and for anything but moderate performance, they must be built to address certain issues.
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